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Analysis

  • max time kernel
    148s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-20241010-en
  • resource tags

    arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
  • submitted
    29/12/2024, 10:32

General

  • Target

    b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe

  • Size

    815KB

  • MD5

    218d225011859a07ef0137e9314be2d0

  • SHA1

    5e1645cde252685e2fcfb8a93b88c104882ac6d3

  • SHA256

    b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab

  • SHA512

    ec4c3f21f52d9a4338478ceb1ed1d28704d570ae3d7314d0296c2fdd5f0a32be99222fa3fa58eaafde2471330855c49fbdcefdecf3d97b27722cc33df7e996ee

  • SSDEEP

    12288:SEJudv2Cy3nRH+BfcS6VC+bamRinL/6qmq3drGO5ddh+Zx1Fe3Lk6wHkBuDwzUY5:Yv43p4/6xVyLSqmg+VFe3LvCUX0gg8r

Malware Config

Extracted

Family

djvu

C2

http://acacaca.org/test1/get.php

Attributes
  • extension

    .vvew

  • offline_id

    rE5LpDv2ftYRXAo7bC18EpzfRMTHSGjgfyIMfZt1

  • payload_url

    http://rgyui.top/dl/build2.exe

    http://acacaca.org/files/1/build3.exe

  • ransomnote

    ATTENTION! Don't worry, you can return all your files! All your files like pictures, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-QsoSRIeAK6 Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that's price for you is $490. Please note that you'll never restore your data without payment. Check your e-mail "Spam" or "Junk" folder if you don't get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: 0530Jhyjd

rsa_pubkey.plain

Signatures

  • Detected Djvu ransomware 15 IoCs
  • Djvu Ransomware

    Ransomware which is a variant of the STOP family.

  • Djvu family
  • Modifies file permissions 1 TTPs 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Looks up external IP address via web service 3 IoCs

    Uses a legitimate IP lookup service to find the infected system's external IP.

  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 5 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of WriteProcessMemory 30 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
    "C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:2496
    • C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
      "C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe"
      2⤵
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:2832
      • C:\Windows\SysWOW64\icacls.exe
        icacls "C:\Users\Admin\AppData\Local\31dd479c-9680-455e-8307-348616a0fc65" /deny *S-1-1-0:(OI)(CI)(DE,DC)
        3⤵
        • Modifies file permissions
        • System Location Discovery: System Language Discovery
        PID:2692
      • C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
        "C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe" --Admin IsNotAutoStart IsNotTask
        3⤵
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1980
        • C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe
          "C:\Users\Admin\AppData\Local\Temp\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe" --Admin IsNotAutoStart IsNotTask
          4⤵
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          PID:1072

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    1KB

    MD5

    67e486b2f148a3fca863728242b6273e

    SHA1

    452a84c183d7ea5b7c015b597e94af8eef66d44a

    SHA256

    facaf1c3a4bf232abce19a2d534e495b0d3adc7dbe3797d336249aa6f70adcfb

    SHA512

    d3a37da3bb10a9736dc03e8b2b49baceef5d73c026e2077b8ebc1b786f2c9b2f807e0aa13a5866cf3b3cafd2bc506242ef139c423eaffb050bbb87773e53881e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    436B

    MD5

    971c514f84bba0785f80aa1c23edfd79

    SHA1

    732acea710a87530c6b08ecdf32a110d254a54c8

    SHA256

    f157ed17fcaf8837fa82f8b69973848c9b10a02636848f995698212a08f31895

    SHA512

    43dc1425d80e170c645a3e3bb56da8c3acd31bd637329e9e37094ac346ac85434df4edcdbefc05ae00aea33a80a88e2af695997a495611217fe6706075a63c58

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\8B2B9A00839EED1DFDCCC3BFC2F5DF12

    Filesize

    174B

    MD5

    65194add1e0a459c0ed8db371273b4ef

    SHA1

    a93e205222aa651ed479f8f5762e821c7cdccba9

    SHA256

    ecbc78bb96aec164d1e134ecb98154dae84e7e6e17cae6af6f3b3d89b3a54ea1

    SHA512

    293d2307afdd13e7f521da75c8df45b0ddd94a04dd8face621e010774886b4417aa2ce7f60634072d83958da82ca969f94bc0e125169bb37a0dcc2bb4eace01b

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015

    Filesize

    342B

    MD5

    55687eceab008685ba12b68edaa92f48

    SHA1

    cf0376b40ab78d9c2e79f279aa27e0bc7518d3d6

    SHA256

    b6123e5f27c1e1af4515ea1142db5c5e7b9f2a83f6726c4cbd5ea5c4066de597

    SHA512

    96ef49687f2ddbacfb7c198b84f70ab2c9b0cfe7e98f59b17f377ac8289a3309e5b651c406f72a6420dd0dee9ef01a72b2c9cfbd5c8bfc62b131ab4ebe2cfd0e

  • C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\B46811C17859FFB409CF0E904A4AA8F8

    Filesize

    170B

    MD5

    b3868796c14d1162d57ca5b77b457e22

    SHA1

    12e800aaae5e1409e1f4fe970392e67c2c12cc35

    SHA256

    a7a8898394b8df9f7cde3fc04dfaafef6919c02c619a9a5d90f8eaa9168f9342

    SHA512

    a66d1782074405a72e7a0d77ba711caa5e01dcc1a036a380a120c120776093e3c56c143f53d0ac90cfee81d9e4edb735aa6a97c1c61441253cd75ee832c6c102

  • C:\Users\Admin\AppData\Local\31dd479c-9680-455e-8307-348616a0fc65\b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab.exe

    Filesize

    815KB

    MD5

    218d225011859a07ef0137e9314be2d0

    SHA1

    5e1645cde252685e2fcfb8a93b88c104882ac6d3

    SHA256

    b68c1d3bdf40f24187d3136c0baa7b7e1d2c17c81dcbfa3132aeb91f1e6568ab

    SHA512

    ec4c3f21f52d9a4338478ceb1ed1d28704d570ae3d7314d0296c2fdd5f0a32be99222fa3fa58eaafde2471330855c49fbdcefdecf3d97b27722cc33df7e996ee

  • C:\Users\Admin\AppData\Local\Temp\Cab538C.tmp

    Filesize

    70KB

    MD5

    49aebf8cbd62d92ac215b2923fb1b9f5

    SHA1

    1723be06719828dda65ad804298d0431f6aff976

    SHA256

    b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

    SHA512

    bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

  • memory/1072-51-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1072-50-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1072-69-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1072-65-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1072-68-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1072-35-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1072-67-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1072-37-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1072-56-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1072-52-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/1980-36-0x0000000000400000-0x00000000004D9000-memory.dmp

    Filesize

    868KB

  • memory/1980-30-0x0000000000400000-0x00000000004D9000-memory.dmp

    Filesize

    868KB

  • memory/1980-29-0x0000000000320000-0x00000000003B2000-memory.dmp

    Filesize

    584KB

  • memory/2496-7-0x0000000000360000-0x00000000003F2000-memory.dmp

    Filesize

    584KB

  • memory/2496-5-0x00000000004E0000-0x00000000005FB000-memory.dmp

    Filesize

    1.1MB

  • memory/2496-1-0x0000000000360000-0x00000000003F2000-memory.dmp

    Filesize

    584KB

  • memory/2496-0-0x0000000000360000-0x00000000003F2000-memory.dmp

    Filesize

    584KB

  • memory/2832-4-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2832-2-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

    Filesize

    4KB

  • memory/2832-8-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2832-9-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB

  • memory/2832-27-0x0000000000400000-0x0000000000537000-memory.dmp

    Filesize

    1.2MB